An. Baranov et al., LOW-THRESHOLD LASER-DIODES BASED ON TYPE-II GAINASSB GASB QUANTUM-WELLS OPERATING AT 2.36 MU-M AT ROOM-TEMPERATURE/, Electronics Letters, 32(24), 1996, pp. 2279-2280
Laser diodes emitting at 2.36 mu m at room temperature have been fabri
cated from a type-II quantum-well heterostructure with an active regio
n consisting of five Ga0.65In0.35As0.15Sb0.85 wells and GaSb barriers.
A pulsed threshold current density of 305 A/cm(2) has been obtained f
or an 820 mu m-long-device at 23 degrees C. The characteristic tempera
ture T-0 was found to be 55K between -30 and 50 degrees C, the differe
ntial quantum efficiency being 35% for 600 mu m long lasers.